SPECIES OF ZONITIDA FROM: EQUATORIAL AFRICA, 799 
above, descending in a somewhat cblique curve; labrum thin, 
almost membranaceous, very slightly reflexed; aperture ovate. 
Alt. 5, diam. maj. 8°75, diam. min. 7°25 mm, 
Aperture; alt. 4, diam. 4°25 (nearly) mm. 
Hab. Lake Mutanda, extreme 8.W. Uganda. (Robin Kemp.) 
BLAYNEYELLA, gen. nov. 
Shell thin, corneous, narrowly umbilicate, depressedly turbinate, 
transversely plicate; labrum a little reflexed. 
Genotype: &. percivali Preston. 
Generally, but not always, ornamented with a peripheral 
purplish band. 
Zingis papyracea Preston, from 8.W. Uganda, Proc. Zool. Soe. 
London, 1912, p. 185, pl. xxxii. fig. 15, may also be considered as 
belonging to Blayneyella. 
BLAYNEYELLA PERCIVALI, sp. n. (Pl. I. figs. 19@, 196, 19.) 
Shell perforate, turbinate, thin, pale yellowish brown, painted 
with a rather narrow, supersutural, reddish-purple band, which 
appears on the last whorl as a superperipheral band; whorls 5, 
the last gradually descending in front, marked with oblique, 
arcuate, irregular, crease-like riblets; suture impressed, faintly 
margined below; umbilicus moderately narrow, very deep, slightly 
overhung by the outward reflexion of the columella; columella 
eurved, diaphanous, rather broadly outwardly reflexed above, 
narrowly so below; labrum simple; aperture ovate; interior of 
shell showing the superperipheral band through the test. 
Alt. 9°5, diam. maj. 14°25, diam. min. 11°75 mm. 
Aperture: alt. 7°25, diam. 6-75 mm. 
Hab. Larogi Hills, British East Africa, (A. Blayney Percival.) 
BLAYNEYELLA KISENGIENSIS, sp.n. (PI. I. fig. 21.) 
Shell perforate, depressedly turbinate, thin, very pale reddish 
brown; whorls 54, regularly, but rather rapidly, increasing, 
marked with somewhat indistinct, oblique, radiate riblets; suture 
impressed; base of shell rather convex; umbilicus moderately 
wide, deep; coiumella outwardly expanded above, descending in 
a curve; aperture broadly sublunate. 
Alt. 8°25, diam. maj. 13°25, diam. min. 11 mm, 
Aperture: alt. 5°25, diam. 5°75 mm. 
Hab. Kisengi, Lake Kivu, German East Africa, at an altitude 
of 4500 feet. (Robin Kemp.) 
BLAYNEYELLA PURPURHOCINGTA, sp.n. (PI. I. fig. 20.) 
Shell perforate, thin, corneous, depressedly turbinate, yellowish 
brown, painted with a narrow, supersutural, reddish-purple band, 
which appears on the last whorl as a superperipheral band ; 
whorls 6, regularly increasing, marked with oblique transverse 
